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EP2277857A2 - New crystalline form V of agomelatine, method of preparing same and pharmaceutical compositions containing same - Google Patents

New crystalline form V of agomelatine, method of preparing same and pharmaceutical compositions containing same Download PDF

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Publication number
EP2277857A2
EP2277857A2 EP10011469A EP10011469A EP2277857A2 EP 2277857 A2 EP2277857 A2 EP 2277857A2 EP 10011469 A EP10011469 A EP 10011469A EP 10011469 A EP10011469 A EP 10011469A EP 2277857 A2 EP2277857 A2 EP 2277857A2
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Prior art keywords
agomelatine
crystalline form
disorders
formula
pharmaceutical compositions
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EP10011469A
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German (de)
French (fr)
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EP2277857A3 (en
Inventor
Gérard Coquerel
Julie Linol
Jean-Claude Souvie
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Laboratoires Servier SAS
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Laboratoires Servier SAS
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C231/00—Preparation of carboxylic acid amides
    • C07C231/22—Separation; Purification; Stabilisation; Use of additives
    • C07C231/24—Separation; Purification
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
    • A61P15/08—Drugs for genital or sexual disorders; Contraceptives for gonadal disorders or for enhancing fertility, e.g. inducers of ovulation or of spermatogenesis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
    • A61P15/10—Drugs for genital or sexual disorders; Contraceptives for impotence
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
    • A61P15/18—Feminine contraceptives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/06—Antimigraine agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/08—Antiepileptics; Anticonvulsants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/14—Drugs for disorders of the nervous system for treating abnormal movements, e.g. chorea, dyskinesia
    • A61P25/16—Anti-Parkinson drugs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/18—Antipsychotics, i.e. neuroleptics; Drugs for mania or schizophrenia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/20—Hypnotics; Sedatives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/22—Anxiolytics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/24—Antidepressants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00—Drugs for disorders of the metabolism
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00—Drugs for disorders of the metabolism
    • A61P3/04—Anorexiants; Antiobesity agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00—Drugs for disorders of the metabolism
    • A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
    • A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00—Drugs for immunological or allergic disorders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00—Drugs for immunological or allergic disorders
    • A61P37/02—Immunomodulators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C233/00—Carboxylic acid amides
    • C07C233/01—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C233/16—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms
    • C07C233/17—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom
    • C07C233/18—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom having the carbon atom of the carboxamide group bound to a hydrogen atom or to a carbon atom of an acyclic saturated carbon skeleton
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2602/00—Systems containing two condensed rings
    • C07C2602/02—Systems containing two condensed rings the rings having only two atoms in common
    • C07C2602/04—One of the condensed rings being a six-membered aromatic ring
    • C07C2602/10—One of the condensed rings being a six-membered aromatic ring the other ring being six-membered, e.g. tetraline

Definitions

  • the present invention relates to a new crystalline form V of agomelatine or N - [2- (7-methoxy-1-naphthyl) ethyl] acetamide of formula (I): its preparation process as well as the pharmaceutical compositions containing it.
  • the patent EP 0 447 285 describes the eight-step access to agomelatine from 7-methoxy-1-tetralone. However, this document does not specify the conditions for obtaining agomelatine in a form having these characteristics in a reproducible manner.
  • the Applicant has now developed a method for obtaining agomelatine in a well-defined crystalline form, perfectly reproducible and thus having interesting characteristics of dissolution and ease of formulation.
  • the present invention relates to the crystalline form V of the compound of formula (I), characterized by the following X-ray powder diffraction pattern, measured on a Siemens D5005 diffractometer (copper anticathode) and expressed in terms of inter-reticular distance. d, Bragg angle 2 theta, and relative intensity (expressed as a percentage of the most intense line): 2-Theta (°) exp. d ( ⁇ ) exp.
  • the invention also extends to the process for preparing the crystalline form V of the compound of formula (I), characterized in that the agomelatine is subjected to mechanical grinding said "high energy".
  • the crystallization process according to the invention it is possible to use the compound of formula (I) obtained by any process.
  • the invention also extends to another process for the preparation of the crystalline form V of the compound of formula (I), characterized in that the agomelatine is heated until complete melting and then it is placed at room temperature and at the same time, a very small amount of the crystalline form V of the freshly prepared compound of formula (I) is added and then allowed to cool to complete crystallization.
  • the agomelatine will be melted at 110 ° C.
  • the amount of crystalline form V added in this second crystallization process according to the invention will preferably be between 1/100 and 1/50 of the weight of agomelatine.
  • this second crystallization process according to the invention it is possible to use the compound of formula (I) obtained by any process.
  • the pharmacological study of the form V thus obtained showed an important activity on the central nervous system as well as on the microcirculation which makes it possible to establish its utility in the treatment of the stress, the sleep disorders, the anxiety, the major depression, seasonal depression, cardiovascular diseases, pathologies of the digestive system, insomnia and fatigue due to jet lag, schizophrenia, panic attacks, melancholy, appetite disorders, obesity , insomnia, pain, psychotic disorders, epilepsy, diabetes, Parkinson's disease, senile dementia, various disorders related to normal or pathological aging, migraine, memory, Alzheimer's disease, as well as in disorders of the cerebral circulation.
  • the form V of agomelatine can be used in sexual dysfunctions, that it possesses properties of ovulation inhibitors, immunomodulators and that it is likely to be used in the treatment of cancers.
  • the crystalline form V of agomelatine will be used preferably in the treatment of major depression, seasonal depression, sleep disorders, cardiovascular pathologies, pathologies of the digestive system, insomnia and fatigue due to jet lag, disorders appetite and obesity.
  • the invention also extends to pharmaceutical compositions containing as active principle the crystalline form V of the compound of formula (I) with one or more inert, non-toxic and suitable excipients.
  • pharmaceutical compositions according to the invention mention may be made more particularly of those which are suitable for oral, parenteral (intravenous or subcutaneous), nasal administration, single or coated tablets, granules, sublingual tablets, capsules, tablets, suppositories, creams, ointments, skin gels, injectables, oral suspensions and chewables.
  • the useful dosage is adaptable according to the nature and severity of the condition, the route of administration and the age and weight of the patient. This dosage ranges from 0.1 mg to 1 g per day in one or more doses.
  • Example 1 Crystalline form V of N - [2- (7-methoxy-1-naphthyl) ethyl] acetamide
  • Example 2 Crystalline form V of N - [2- (7-methoxy-1-naphthyl) ethyl] acetamide
  • Preparation formula for 1000 tablets 25 mg doses: Composed of Example 1 or 2 25 g Lactose monohydrate 62 g Magnesium Stearate 1.3 g Corn starch 26 g maltodextrins 9 g Anhydrous colloidal silica 0.3 g Pregelatinized maize starch type A 4 g Stearic acid 2.6 g
  • Preparation formula for 1000 tablets 25 mg doses: Composed of Example 1 or 2 25 g Lactose monohydrate 62 g Magnesium Stearate 1.3 g povidone 9 g Anhydrous colloidal silica 0.3 g Cellulose sodium glycolate 30 g Stearic acid 2.6 g

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  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
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  • Engineering & Computer Science (AREA)
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  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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  • Reproductive Health (AREA)
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  • Diabetes (AREA)
  • Hematology (AREA)
  • Immunology (AREA)
  • Gynecology & Obstetrics (AREA)
  • Obesity (AREA)
  • Psychiatry (AREA)
  • Pain & Pain Management (AREA)
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  • Hospice & Palliative Care (AREA)
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  • Pregnancy & Childbirth (AREA)
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Abstract

Crystalline form V of agomelatine (I) is new. Crystalline form V of agomelatine ((I); N-[2-(7-methoxy-1-naphthyl)ethyl]acetamide) having powder X-ray diffraction diagram, measured using a diffractometer (copper anticathode) and expressed in terms of inter-planar distance d (8.979-3.239 A[deg]), Bragg's angle 2 theta (9.84-27.51 degrees), intensity and relative intensity (15-100 percentage with respect to the most intense), is new. Independent claims are included for: (1) the preparation of (I); and (2) a composition comprising (I) and, inert and non-toxic carriers. ACTIVITY : Hypnotic; Tranquilizer; Antidepressant; Cardiovascular-Gen.; Sedative; Muscular-Gen.; Immunomodulator; Neuroleptic; Anorectic; Anticonvulsant; Antidiabetic; Antiparkinsonian; Nootropic; Antimigraine; Neuroprotective; Endocrine-Gen.; Contraceptive; Cytostatic. MECHANISM OF ACTION : Melatoninergic receptor agonist.

Description

La présente invention concerne une nouvelle forme cristalline V de l'agomélatine ou N-[2-(7-méthoxy-1-naphtyl)éthyl]acétamide de formule (I) :

Figure imgb0001
son procédé de préparation ainsi que les compositions pharmaceutiques qui la contiennent.The present invention relates to a new crystalline form V of agomelatine or N - [2- (7-methoxy-1-naphthyl) ethyl] acetamide of formula (I):
Figure imgb0001
 its preparation process as well as the pharmaceutical compositions containing it.

L'agomélatine ou N-[2-(7-méthoxy-1-naphtyl)éthyl]acétamide possède des propriétés pharmacologiques intéressantes.Agomelatine or N - [2- (7-methoxy-1-naphthyl) ethyl] acetamide has valuable pharmacological properties.

Il présente en effet la double particularité d'être d'une part agoniste sur les récepteurs du système mélatoninergique et d'autre part antagoniste du récepteur 5-HT2C. Ces propriétés lui confère une activité dans le système nerveux central et plus particulièrement dans le traitement de la dépression majeure, des dépressions saisonnières, des troubles du sommeil, des pathologies cardiovasculaires, des pathologies du système digestif, des insomnies et fatigues dues aux décalages horaires, des troubles de l'appétit et de l'obésité.It has indeed the double peculiarity of being on the one hand agonist on the receptors of the melatoninergic system and on the other hand antagonist of the 5-HT 2C receptor. These properties give it an activity in the central nervous system and more particularly in the treatment of major depression, seasonal depressions, sleep disorders, cardiovascular pathologies, pathologies of the digestive system, insomnia and fatigue due to time differences, appetite and obesity disorders.

L'agomélatine, sa préparation et son utilisation en thérapeutique ont été décrits dans le brevet européen EP 0 447 285 .Agomelatine, its preparation and its therapeutic use have been described in the European patent EP 0 447 285 .

Compte tenu de l'intérêt pharmaceutique de ce composé, il était primordial de l'obtenir avec une excellente pureté, et notamment sous une forme parfaitement reproductible, présentant des caractéristiques intéressantes de dissolution et de facilité de formulation permettant son stockage prolongé sans conditions particulières de température, de lumière, d'humidité ou de taux d'oxygène.Given the pharmaceutical interest of this compound, it was essential to obtain it with excellent purity, and in particular in a perfectly reproducible form, having interesting characteristics of dissolution and ease of formulation allowing its prolonged storage without particular conditions of temperature, light, humidity or oxygen level.

Le brevet EP 0 447 285 décrit l'accès en huit étapes à l'agomélatine à partir de la 7-méthoxy-1-tétralone. Cependant, ce document ne précise pas les conditions d'obtention de l'agomélatine sous une forme présentant ces caractéristiques de manière reproductible.The patent EP 0 447 285 describes the eight-step access to agomelatine from 7-methoxy-1-tetralone. However, this document does not specify the conditions for obtaining agomelatine in a form having these characteristics in a reproducible manner.

La demanderesse a présentement mis au point un procédé d'obtention de l'agomélatine sous une forme cristalline bien définie, parfaitement reproductible et présentant de ce fait des caractéristiques intéressantes de dissolution et de facilité de formulation.The Applicant has now developed a method for obtaining agomelatine in a well-defined crystalline form, perfectly reproducible and thus having interesting characteristics of dissolution and ease of formulation.

Plus spécifiquement, la présente invention concerne la forme cristalline V du composé de formule (I), caractérisée par le diagramme de diffraction X sur poudre suivant, mesuré sur un diffractomètre Siemens D5005 (anticathode de cuivre) et exprimé en termes de distance inter-réticulaire d, d'angle de Bragg 2 thêta, et d'intensité relative (exprimée en pourcentage par rapport à la raie la plus intense) : 2-Theta (°) exp. d (Å) exp. Intensité (%) 9,84 8,979 17 12,40 7,134 15 13,31 6,646 19 15,14 5,848 18 15,98 5,543 18 16,62 5,329 19 17,95 4,939 100 18,88 4,697 65 20,49 4,332 24 20,99 4,228 34 23,07 3,852 39 23,44 3,792 36 24,28 3,663 58 25,10 3,545 19 26,02 3,422 15 26,82 3,322 19 27,51 3,239 16 More specifically, the present invention relates to the crystalline form V of the compound of formula (I), characterized by the following X-ray powder diffraction pattern, measured on a Siemens D5005 diffractometer (copper anticathode) and expressed in terms of inter-reticular distance. d, Bragg angle 2 theta, and relative intensity (expressed as a percentage of the most intense line): 2-Theta (°) exp. d (Å) exp. Intensity (%) 9.84 8.979 17 12,40 7.134 15 13,31 6.646 19 15.14 5.848 18 15.98 5,543 18 16.62 5.329 19 17.95 4,939 100 18,88 4,697 65 20.49 4,332 24 20.99 4,228 34 23,07 3,852 39 23.44 3,792 36 24.28 3,663 58 25,10 3,545 19 26.02 3,422 15 26.82 3,322 19 27,51 3,239 16

L'invention s'étend également au procédé de préparation de la forme cristalline V du composé de formule (I), caractérisé en ce que l'on soumet l'agomélatine à un broyage mécanique dit « de haute énergie ».
Dans le procédé de cristallisation selon l'invention, on peut utiliser le composé de formule (I) obtenu par n'importe quel procédé.The invention also extends to the process for preparing the crystalline form V of the compound of formula (I), characterized in that the agomelatine is subjected to mechanical grinding said "high energy".
In the crystallization process according to the invention, it is possible to use the compound of formula (I) obtained by any process.

L'invention s'étend également à un autre procédé de préparation de la forme cristalline V du composé de formule (I), caractérisé en ce que l'on chauffe l'agomélatine jusqu'à fusion complète puis on le place à température ambiante et simultanément on ajoute une très petite quantité de la forme cristalline V du composé de formule (I) fraîchement préparée, puis on laisse ensuite refroidir jusqu'à cristallisation complète.
De préférence, dans ce second procédé de cristallisation selon l'invention, l'agomélatine sera fondu à 110°C.
La quantité de forme cristalline V ajoutée dans ce second procédé de cristallisation selon l'invention sera comprise de préférence entre 1/100 et 1/50 du poids d'agomélatine.
Dans ce second procédé de cristallisation selon l'invention, on peut utiliser le composé de formule (I) obtenu par n'importe quel procédé.The invention also extends to another process for the preparation of the crystalline form V of the compound of formula (I), characterized in that the agomelatine is heated until complete melting and then it is placed at room temperature and at the same time, a very small amount of the crystalline form V of the freshly prepared compound of formula (I) is added and then allowed to cool to complete crystallization.
Preferably, in this second crystallization process according to the invention, the agomelatine will be melted at 110 ° C.
The amount of crystalline form V added in this second crystallization process according to the invention will preferably be between 1/100 and 1/50 of the weight of agomelatine.
In this second crystallization process according to the invention, it is possible to use the compound of formula (I) obtained by any process.

L'obtention de cette forme cristalline a pour avantage de permettre la préparation de formulations pharmaceutiques ayant une composition constante et reproductible, présentant des caractéristiques de dissolution particulièrement intéressantes, ce qui est particulièrement avantageux lorsque ces formulations sont destinées à l'administration orale.Obtaining this crystalline form has the advantage of allowing the preparation of pharmaceutical formulations having a constant and reproducible composition, having particularly advantageous dissolution characteristics, which is particularly advantageous when these formulations are intended for oral administration.

L'étude pharmacologique de la forme V ainsi obtenue a montré une importante activité sur le système nerveux central ainsi que sur la microcirculation qui permet d'établir son utilité dans le traitement du stress, des troubles du sommeil, de l'anxiété, de la dépression majeure, des dépressions saisonnières, des pathologies cardiovasculaires, des pathologies du système digestif, des insomnies et fatigues dues aux décalages horaires, de la schizophrénie, des attaques de panique, de la mélancolie, des troubles de l'appétit, de l'obésité, de l'insomnie, de la douleur, des troubles psychotiques, de l'épilepsie, du diabète, de la maladie de Parkinson, de la démence sénile, des divers désordres liés au vieillissement normal ou pathologique, de la migraine, des pertes de mémoire, de la maladie d'Alzheimer, ainsi que dans les troubles de la circulation cérébrale. Dans un autre domaine d'activité, il apparaît que dans le traitement, la forme V de l'agomélatine peut être utilisée dans les dysfonctionnements sexuels, qu'elle possède des propriétés d'inhibiteurs de l'ovulation, d'immunomodulateurs et qu'elle est susceptible d'être utilisée dans le traitement des cancers.The pharmacological study of the form V thus obtained showed an important activity on the central nervous system as well as on the microcirculation which makes it possible to establish its utility in the treatment of the stress, the sleep disorders, the anxiety, the major depression, seasonal depression, cardiovascular diseases, pathologies of the digestive system, insomnia and fatigue due to jet lag, schizophrenia, panic attacks, melancholy, appetite disorders, obesity , insomnia, pain, psychotic disorders, epilepsy, diabetes, Parkinson's disease, senile dementia, various disorders related to normal or pathological aging, migraine, memory, Alzheimer's disease, as well as in disorders of the cerebral circulation. In another field of activity, it appears that in the treatment, the form V of agomelatine can be used in sexual dysfunctions, that it possesses properties of ovulation inhibitors, immunomodulators and that it is likely to be used in the treatment of cancers.

La forme cristalline V de l'agomélatine sera utilisée de préférence dans les traitements de la dépression majeure, des dépressions saisonnières, des troubles du sommeil, des pathologies cardiovasculaires, des pathologies du système digestif, des insomnies et fatigues dues aux décalages horaires, des troubles de l'appétit et de l'obésité.The crystalline form V of agomelatine will be used preferably in the treatment of major depression, seasonal depression, sleep disorders, cardiovascular pathologies, pathologies of the digestive system, insomnia and fatigue due to jet lag, disorders appetite and obesity.

L'invention s'étend aussi aux compositions pharmaceutiques renfermant comme principe actif la forme cristalline V du composé de formule (I) avec un ou plusieurs excipients inertes, non toxiques et appropriés. Parmi les compositions pharmaceutiques selon l'invention, on pourra citer plus particulièrement celles qui conviennent pour l'administration orale, parentérale (intraveineuse ou sous-cutanée), nasale, les comprimés simples ou dragéifiés, les granulés, les comprimés sublinguaux, les gélules, les tablettes, les suppositoires, les crèmes, les pommades, les gels dermiques, les préparations injectables, les suspensions buvables et les pâtes à mâcher.The invention also extends to pharmaceutical compositions containing as active principle the crystalline form V of the compound of formula (I) with one or more inert, non-toxic and suitable excipients. Among the pharmaceutical compositions according to the invention, mention may be made more particularly of those which are suitable for oral, parenteral (intravenous or subcutaneous), nasal administration, single or coated tablets, granules, sublingual tablets, capsules, tablets, suppositories, creams, ointments, skin gels, injectables, oral suspensions and chewables.

La posologie utile est adaptable selon la nature et la sévérité de l'affection, la voie d'administration ainsi que l'âge et le poids du patient. Cette posologie varie de 0,1 mg à 1 g par jour en une ou plusieurs prises.The useful dosage is adaptable according to the nature and severity of the condition, the route of administration and the age and weight of the patient. This dosage ranges from 0.1 mg to 1 g per day in one or more doses.

Les exemples ci-dessous illustrent l'invention, mais ne la limitent en aucune façon.The examples below illustrate the invention, but do not limit it in any way.

Exemple 1 : Forme cristalline V du N-[2-(7-Méthoxy-1-naphtyl)éthyl]acétamide Example 1 : Crystalline form V of N - [2- (7-methoxy-1-naphthyl) ethyl] acetamide

100 g de N-[2-(7-Méthoxy-1-naphtyl)éthyl]acétamide sont placés dans le broyeur mécanique de type vario-planetary mill pendant environ 6 heures et le solide obtenu est caractérisé par le diagramme de diffraction X sur poudre suivant, mesuré sur un diffractomètre Siemens D5005 (anticathode de cuivre) et exprimé en termes de distance inter-réticulaire d, d'angle de Bragg 2 thêta, et d'intensité relative (exprimée en pourcentage par rapport à la raie la plus intense) : 2-Theta (°) exp. d (Å) exp. Intensité (%) 9,84 8,979 17 12,40 7,134 15 13,31 6,646 19 15,14 5,848 18 15,98 5,543 18 16,62 5,329 19 17,95 4,939 100 18,88 4,697 65 20,49 4,332 24 20,99 4,228 34 23,07 3,852 39 23,44 3,792 36 24,28 3,663 58 25,10 3,545 19 26,02 3,422 15 26,82 3,322 19 27,51 3,239 16 100 g of N - [2- (7-methoxy-1-naphthyl) ethyl] acetamide are placed in the vario-planetary mill mechanical mill for about 6 hours and the solid obtained is characterized by the powder X-ray diffraction pattern. next, measured on a Siemens D5005 diffractometer (copper anticathode) and expressed in terms of inter-reticular distance d, Bragg 2 theta angle, and relative intensity (expressed as a percentage of the most intense line) : 2-Theta (°) exp. d (Å) exp. Intensity (%) 9.84 8.979 17 12,40 7.134 15 13,31 6.646 19 15.14 5.848 18 15.98 5,543 18 16.62 5.329 19 17.95 4,939 100 18,88 4,697 65 20.49 4,332 24 20.99 4,228 34 23,07 3,852 39 23.44 3,792 36 24.28 3,663 58 25,10 3,545 19 26.02 3,422 15 26.82 3,322 19 27,51 3,239 16

Exemple 2 : Forme cristalline V du N-[2-(7-Méthoxy-1-naphtyl)éthyl]acétamide Example 2 : Crystalline form V of N - [2- (7-methoxy-1-naphthyl) ethyl] acetamide

4 g de N-[2-(7-Méthoxy-1-naphtyl)éthyl]acétamide sont placés dans une étuve ventilée à 110°C. Après une heure à 110°C, le produit est mis à température ambiante et ensemencé avec 0,05 g de forme cristalline V du N-[2-(7-Méthoxy-1-naphtyl)éthyl]acétamide structuralement pure obtenue par broyage haute énergie. Au bout de 5 minutes, la cristallisation est totale et le solide obtenu est caractérisé par le diagramme de diffraction X sur poudre suivant, mesuré sur un diffractomètre Siemens D5005 (anticathode de cuivre) et exprimé en termes de distance inter-réticulaire d, d'angle de Bragg 2 thêta, et d'intensité relative (exprimée en pourcentage par rapport à la raie la plus intense) : 2-Theta (°) exp. d (Å) exp. Intensité (%) 9,84 8,979 17 12,40 7,134 15 13,31 6,646 19 15,14 5,848 18 15,98 5,543 18 16,62 5,329 19 17,95 4,939 100 18,88 4,697 65 20,49 4,332 24 20,99 4,228 34 23,07 3,852 39 23,44 3,792 36 24,28 3,663 58 25,10 3,545 19 26,02 3,422 15 26,82 3,322 19 27,51 3,239 16 4 g of N - [2- (7-methoxy-1-naphthyl) ethyl] acetamide are placed in a ventilated oven at 110 ° C. After one hour at 110 ° C., the product is brought to ambient temperature and inoculated with 0.05 g of crystalline form V of structurally pure N - [2- (7-methoxy-1-naphthyl) ethyl] acetamide obtained by high grinding. energy. After 5 minutes, the crystallization is complete and the solid obtained is characterized by the following X-ray powder diffraction pattern, measured on a Siemens D5005 diffractometer (copper anticathode) and expressed in terms of inter-reticular distance d, d Bragg angle 2 theta, and relative intensity (expressed as a percentage of the most intense line): 2-Theta (°) exp. d (Å) exp. Intensity (%) 9.84 8.979 17 12,40 7.134 15 13,31 6.646 19 15.14 5.848 18 15.98 5,543 18 16.62 5.329 19 17.95 4,939 100 18,88 4,697 65 20.49 4,332 24 20.99 4,228 34 23,07 3,852 39 23.44 3,792 36 24.28 3,663 58 25,10 3,545 19 26.02 3,422 15 26.82 3,322 19 27,51 3,239 16

Exemple 3 : Composition pharmaceutique Example 3 : Pharmaceutical composition

Formule de préparation pour 1000 comprimés doses à 25 mg : Composé de l'Exemple 1 ou 2 25 g Lactose monohydrate 62 g Stéarate de Magnésium 1,3 g Amidon de maïs 26 g Maltodextrines 9 g Silice colloïdale anhydre 0,3 g Amidon de maïs prégélatinisé type A 4 g Acide stéarique 2,6 g Preparation formula for 1000 tablets 25 mg doses: Composed of Example 1 or 2 25 g Lactose monohydrate 62 g Magnesium Stearate 1.3 g Corn starch 26 g maltodextrins 9 g Anhydrous colloidal silica 0.3 g Pregelatinized maize starch type A 4 g Stearic acid 2.6 g

Exemple 4 : Composition pharmaceutique Example 4 : Pharmaceutical composition

Formule de préparation pour 1000 comprimés doses à 25 mg : Composé de l'Exemple 1 ou 2 25 g Lactose monohydrate 62 g Stéarate de Magnésium 1,3 g Povidone 9 g Silice colloïdale anhydre 0,3 g Cellulose sodium glycolate 30 g Acide stéarique 2,6 g Preparation formula for 1000 tablets 25 mg doses: Composed of Example 1 or 2 25 g Lactose monohydrate 62 g Magnesium Stearate 1.3 g povidone 9 g Anhydrous colloidal silica 0.3 g Cellulose sodium glycolate 30 g Stearic acid 2.6 g

Claims (6)

Forme cristalline V de l'agomélatine de formule (I) :
Figure imgb0002
 caractérisée par le diagramme de diffraction X sur poudre suivant, mesuré sur un diffractomètre Siemens D5005 (anticathode de cuivre) et exprimé en termes de distance inter-réticulaire d, d'angle de Bragg 2 thêta, et d'intensité relative (exprimée en pourcentage par rapport à la raie la plus intense) : 2-Theta (°) exp. d (À) exp. Intensité (%) 9,84 8,979 17 12,40 7,134 15 13,31 6,646 19 15,14 5,848 18 15,98 5,543 18 16,62 5,329 19 17,95 4,939 100 18,88 4,697 65 20,49 4,332 24 20,99 4,228 34 23,07 3,852 39 23,44 3,792 36 24,28 3,663 58 25,10 3,545 19 26,02 3,422 15 26,82 3,322 19 27,51 3,239 16
Crystal form V of agomelatine of formula (I):
Figure imgb0002
 characterized by the following X-ray powder diffraction pattern, measured on a Siemens D5005 diffractometer (copper anticathode) and expressed in terms of inter-reticular distance d, Bragg 2 theta angle, and relative intensity (expressed as a percentage compared to the most intense line): 2-Theta (°) exp. d (To) exp. Intensity (%) 9.84 8.979 17 12,40 7.134 15 13,31 6.646 19 15.14 5.848 18 15.98 5,543 18 16.62 5.329 19 17.95 4,939 100 18,88 4,697 65 20.49 4,332 24 20.99 4,228 34 23,07 3,852 39 23.44 3,792 36 24.28 3,663 58 25,10 3,545 19 26.02 3,422 15 26.82 3,322 19 27,51 3,239 16
Procédé de préparation de la forme cristalline V du composé de formule (I) selon la revendication 1, caractérisé en ce que l'on l'on soumet l'agomélatine à un broyage mécanique dit « de haute énergie ».Process for the preparation of the crystalline form V of the compound of formula (I) according to claim 1, characterized in that the agomelatine is subjected to mechanical grinding known as "high energy". Procédé de préparation de la forme cristalline V du composé de formule (I) selon la revendication 1, caractérisé en ce que l'on l'on chauffe l'agomélatine jusqu'à fusion complète puis on le place à température ambiante et simultanément on ajoute une très petite quantité de la forme cristalline V du composé de formule (I) fraîchement préparée, puis on laisse ensuite refroidir jusqu'à cristallisation complète.Process for the preparation of the crystalline form V of the compound of formula (I) according to Claim 1, characterized in that the agomelatine is heated until complete melting and then it is placed at ambient temperature and at the same time it is added a very small amount of the crystalline form V of the freshly prepared compound of formula (I), and then allowed to cool to complete crystallization. Compositions pharmaceutiques contenant comme principe actif la forme cristalline V de l'agomélatine selon la revendication 1, en combinaison avec un ou plusieurs véhicules inertes, non toxiques et pharmaceutiquement acceptables.Pharmaceutical compositions containing as active principle the crystalline form V of agomelatine according to claim 1, in combination with one or more inert, non-toxic and pharmaceutically acceptable carriers. Compositions pharmaceutiques selon la revendication 4 utiles pour la fabrication de médicaments pour traiter les troubles du système mélatoninergique.Pharmaceutical compositions according to claim 4 for use in the manufacture of medicaments for treating disorders of the melatoninergic system. Compositions pharmaceutiques selon la revendication 4 utiles pour la fabrication de médicaments pour le traitement des troubles du sommeil, du stress, de l'anxiété, des dépressions saisonnières ou de la dépression majeure, des pathologies cardiovasculaires, des pathologies du système digestif, des insomnies et fatigues dues aux décalages horaires, de la schizophrénie, des attaques de paniques, de la mélancolie, des troubles de l'appétit, de l'obésité, de l'insomnie, des troubles psychotiques, de l'épilepsie, du diabète, de la maladie de Parkinson, de la démence sénile, des divers désordres liés au vieillissement normal ou pathologique, de la migraine, des pertes de mémoire, de la maladie d'Alzheimer, des troubles de la circulation cérébrale, ainsi que dans les dysfonctionnements sexuels, en tant qu'inhibiteurs de l'ovulation, d'immunomodulateurs et dans le traitement des cancers.Pharmaceutical compositions according to claim 4, useful for the manufacture of medicaments for the treatment of sleep disorders, stress, anxiety, seasonal depression or major depression, cardiovascular pathologies, pathologies of the digestive system, insomnia and fatigue due to time differences, schizophrenia, panic attacks, melancholy, appetite disorders, obesity, insomnia, psychotic disorders, epilepsy, diabetes, Parkinson's disease, senile dementia, various disorders related to normal or pathological aging, migraine, memory loss, Alzheimer's disease, cerebral circulation disorders, as well as sexual dysfunction, as ovulation inhibitors, immunomodulators and in the treatment of cancers.
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